I don't really know the msn protocol, but it may not be so difficult. I know there was a plug-in for ¿msn plus? witch enabled that.This can be so much useful.

Also, be able to talk to people who you have not in your contact list. I don't know if this is possible directly, but when you are talking in a multiple conversation and the one who added you have gone, you still can talk to the other one, and you have not him at your contact list.

thanks JackT for answering his second question..about the first queston, no, it might work, sometimes it doesn't work, it depends on MSN servers.. we can't do anything about it.. MSN Plus! plugin couldn't enable that feature since it's not a client side feature, it's a server side feature.